Chapter 2 - Section 2.4 - Inertia and Equilibrium: Newton's First Law of Motion - Practice Problem - Page 40: 2.6

The force exerted on the crate by the bed of the pickup truck is an upward force of $80~N$ We can see a free body diagram for the crate below.

Since the crate stays at rest, the net force on the crate must be zero. Therefore, the force exerted on the crate by the bed of the pickup truck is an upward force which is equal in magnitude to the weight of the crate. Then the net force on the crate is zero. The force exerted on the crate by the bed of the pickup truck is an upward force of $80~N$ We can see a free body diagram for the crate below.